For the second straight season, the reigning Heisman Trophy winner returns to college football ... as a redshirt sophomore. But will Jameis Winston do what Johnny Manziel could not and win two in a row? Or will other high-profile QBs (Marcus Mariota, Braxton Miller, Todd Hundley et al.) or running backs (Todd Gurley, Melvin Gordon and others) get in the way? Click on the images to set your preseason Heisman Watch rankings!